Molder&#39;s apparatus.



No. 882,823; I PATENTEDMAK-Z i, 1908.

. S. GRIFFITH.

MOLDER'S APPARATUS. APPLICATION FILED mm: 1., 1905.

. Twm

1n: NORRIS PETERS CGQ'WASHINOTON, n. c. I

'2 SHEETS-BHEET 1.

No. 882,823. 'PATENTED MAR. 24, 1808. s. GRIFFITH,

MOLDERS APPARATUS.

APPLICATION FILED JUNE 1 1905.

2 SHEETS-SHEET 2.

FJt. 27 5? 8 UNITED STATES PATENT OFFICE.

STANTON GRIFFITH, OF BELOIT, WISCONSIN, ASSIGNOR OF ONE-HALF TO PERCY O. BROOKS, OF BELOIT, WISCONSIN.

MOLDER S APPARATUS.

Specification of Letters Patent.

Application filed June 1, 1905.

To all whom it may concern:

Be it known that I, STANTON GRIFFITH, residing at Beloit, in the county of Rock and State of Wisconsin, have invented certain new and useful Improvements in Molders Apparatus, of which the following is a full, clear, and eXact description, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to molding apparatus.

One of the objects thereof is to provide simple and efficient apparatus forthe rapid and economical formation of molds.

Another object is to provide means whereby the" component parts of a flask may be successively filled and removed from patterns.

Another object is to provide means whereby the component parts of a mold may readily be drawn or forced in a rectilinear line from a pattern with the chances of injury to the mold reduced to a minimum.

Other objects will be in part obvious and in part pointed out hereinafter.

The invention accordingly consists in the features of construction, combinations of elements and arrangement of parts, which will be exemplified in the apparatus hereinafter described and the scope of the application of which will be indicated in the following claims.

In the accompanying drawings, wherein is shown one of various possible embodiments of the several features of my invention, Figure 1 is a sectional elevation of the same showing patterns in position. Fig. 2 is a similar view of the same parts showing one of the members of the flask filled. Fig. 3 is a similar view of the same parts at a later stage in their use. Fig. 4 is a similar view of the same parts at yet later stage. Fig. 5 is a sectional elevation showing one of the mold members removed and the second positioned upon the corres onding pattern. Fig. 6 is a detail view ta en substantially along the line 0c:r of Fig. 1. Fig. 7 is an elevation of the pattern shown in the above figures.

Similar reference characters refer to similar parts throughout the several views.

In order to render clearer the general nature of certain features of my invention, it mayhere be noted that in the formation of molds in general and even in the case in which a succession of molds is to be formed from a single pattern, a considerable manipulation of the gate or other member upon which the pattern is secured is often necessary. It may also be noted that in apparatus in somewhat common use the drawing must be done slowly and carefully to avoid injury to the mold. This step thus consumes a considerable amount of time and skilled labor and in the case in which a number of molds are to be made from the same pattern, this item may add materially to the cost of making. The above and other defects are remedied in constructions of the nature of that hereinafter described.

Referring now to the drawings there is shown in Fig. 1 a pair of standards 1 within which are journaled the trunnions 2 of a pattern support 3, end movement being prevented by suitable detachable collars 4. It may be noted here that by the term pattern support, as used throughout this specification and the following claims, is meant a part adapted to support patterns during the formation of a mold about the same whether this support be what is commonly termed a match-plate, a gate or otherwise. On support 3 in this illustrative embodiment, is shown a pattern comprising the members 5 and 6 and upon the corresponding sides of the support are respectively positioned stripper plates 7 and 8 adapted to co-act with the pattern shown for a purpose hereinafter described. It may here be noted that the eX- pression stripper plate, is used throughout this specification and the following claims with the generally accepted meaning which it has acquired in the art with which thisinvention broadly deals. Stripper plates 7 andS are connected byrods Qpassing throu h suitable sleeves or bushings 10 within tie support 3.

Pivotally mounted upon the support at the sides thereof, as by means of lugs 11, are clamps 12, one of which is clearly shown in Fig. 6 of the drawings. These clamps comprise, in general, an arm 13 having upon its free end a cross arm 14 forming therewith a member which is broadly of the shape of the letter T. At each of the extremities of the cross arm 14 is positioned a set screw 15 for a purpose hereinafter described. Between standards 1 is positioned a table 16 adapted I to be raised and lowered in a rectilinear path by a rod 17 or any other desired'means, the same not being here shown as they form 1n themselves no part of the present invention.

Upon one of the trunnions 2 is preferably fixed a hand wheel 18 provided with a handle 19 for the purpose of swinging the patternsupporting member 3 about its axis. In order to lock this wheel and, consequently, the pattern-supporting member 3, with the parts associated therewith,in the desired positions, there is provided a spring-pressed locking lever 20 pivotally mounted within a housing 21 formed upon the cap of one of the trunnion bearings. This locking lever is pressed outwardly against the hand wheel 18, and when engaged in one or the other of the oppositely disposed recesses 22 formed in the latter member, locks the above parts in the corresponding position.

In order to adjust the position of the above described molding apparatus, the standards 1 have preferably formed thereon racks 23, and are telescopically mounted within bases 24, as shown in Fig. 5 of the drawings. Pinions 25, journaled in these bases, engage the corresponding racks and, upon being turned, as by a crank or other suitable means, are adapted to raise-or lower the entire apparatus in accordance with the direction of rotation of these parts. Locking pawls 26 are also provided within the bases 24, these parts being adapted to engage the corresponding racks and lock the same in' the desired position.

In order to prevent the entry of sand or other foreign material between the rods 9 and the parts within which these rods slide,

. the stripper plates 7 and 8 are preferably connected by a casing 27 formed as of a strip of sheet metal and extending entirely about these plates and thus inclosing the parts above-mentioned and protecting them from the entry of sand or other matter. Slots 28 are provided within casing 27 so as to permit trunnions 2, or other parts, to project therethrough without interfering with the relative movement of the stripper plates to which the casing is secured.

The method of use of the abovedescribed embodiment of my invention is substantially as follows: Assuming the parts to be in the position shown in Fig. 1 of the drawings with the pattern members 5 and 6 properly positioned upon and secured to the support, the stripper plate 7 will lie about the pattern member 5. A flask member 29, which may be termed the drag, is then placed upon the stripper plate 7 about the attern member 5 and the same is then filler with sand 30 and rammed down about the pattern in any desired manner. Next a cover plate 31 is placed upon drag 29 and being forced downwardly upon the sand 30 completes the compression of the same about the pattern. Clamps 12 are then swung upwardly into a position in which one end of each cross armv projects above the cover plate and is clamped in that position as by means of the set screw 15. The support is then turned within the bearings formed in standards 1, and table 16, being raised through the rod 17 to a position in which it engages the cover plate 31, the clamps 12 are loosened and swung free from the same. Table 16 is then lowered, the same traveling in an exactly rectilinear path and the drag 29, together with the molded sand therein is drawn from the pattern member 5, the accurately guided stripper plate 7 aiding in this action. In this manner the mold member is drawn from the pattern with an exactly rectilinear movement and the chances of injury to the mold are reduced to a minimum. Stripper plate 7 then occupies the position shown in Fig. 5 of the drawings and stripper plate 8 is consequently positioned in what may be termed o erative relation, to the support being a out the corresponding pattern member 6. A second flask member 32, which may be termed the cope, is then placed upon the stripper plate 8 and filled with sand 33 as above described with reference to the drag 29. This second flask member is covered. and the cover clamped in position and then rotated and removed in a manner which will not be set forth in detail as it is substantially identical with that above described with reference to drag 29.

It will thus be seen that I have provided means which are well adapted to accomplish the several objects of my invention.

The formation of molds by apparatus of the nature of that above set forth may be simply and rapidly accomplished, particu larly in the case in which a series of identical molds are to be made from the same pat tern. It will also be seen that the apparatus above set forth is of inexpensive construction and is economical in use, not only 011 account of its rapid action with a consequent saving of time and labor, but by reason of the fact that the same may be mani ulated without the employment of skilled he p. The latter statement holds true largely on account of the simplicity and exactness with which the mold may be drawn from the pat tern, a rectilinear movement being insured and the patterns being easily jarred, if necessary, to start the sand from the same, as by means of light blows upon the trunnions of the support. The entire apparatus, moreover, is of durable construction and by reason of the simplicity and strength of the several parts, the chances of the same breaking down in use are reduced to a minimum. It will thus be seen that the apparatus may readily be adjusted to such height as to render it most conveniently used, and that the rotatable parts are automatically and positively locked in the'desired position against either rotary or vertical movement. The casing 27, moreover, by protecting the sliding parts from cutting by sand or other foreign material, materially lengthen the life of these parts of the machine and adapts it more readily to meet the requirements of hard, practical use.

As many changes could he made in the above construction and many apparently widely diflerent embodiments of my ii vention could be made without departing fromthe scope thereof, I intend that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense. I desire it also to he understood that the language used in the following claims is intended to cover all of the generic and. specific features of the invention herein described and all statements of the scope of the invention, which, as a matter of language, might be said to fall therebetween.

Having described my invention, what I claim as new and desire to secure by Letters Patent, is z- 1.. In molding apparatus, in combination, a reversible pattern support, a stripper plate upon each side thereof adapted to support one of the members of a flask, means adapted to guide said stripper plates alternately into operative relation to said pattern support, and clamping means pivotally mounted upon said pattern support and adapted to swing over and clamp a flask mounted upon either side thereof, whereby said support may be reversed. to overlie said flask without causing a displacement of said flask.

2. In molding apparatus, in combination, a pivotally mounted pattern support adapted to swing in a substantially vertical plane, a stripper plate mounted upon each side thereof, guide rods secured to said stripper plates and connecting the same, said guide rods being slidably mounted within said pattern support, clamping means mounted upon said pattern support and adapted to retain a flask member against either side thereof during a reversal of said support, and a vertically movable table positioned be neath said pattern support and adapted to receive and lower the underlying flask from said pattern support.

3. In. molding apparatus, in combination,

a reversible pattern support, a stripper plate on each side thereof adapted to support one of the members of a flask, means adapted to guide said stripper plates alternately into operative relation to said pattern support, means adapted to adjust the height of said pattern support and lock the same in each of a plurality of predetermined positions, means for enabling said pattern support to be reversed without displacing the flask, and means for receiving and downwardly withdrawing the underlying flask from the pattern support.

4. In molding apparatus, in combination, a reversible pattern support, a stripper plate on each side thereof adapted to support one of the members of a flask, means adapted to guide said stripper plates alternately into operative relation to said pattern support, means adapted to adjust the height of said pattern support and lock the same against vertical movement in each of a plurality of predetermined positions, means adapted to impart a rotary movement to said pattern support, means adapted to look said pattern support against rotary movement in each of a plurality of predetermined positions, detachable means for retaining a flask against said support in underlying relation therewith, and a table for carrying said flask downwardly from said. support.

5. In molding apparatus, in combination, a pattern. support, a pair of stripper plates movable relative to said. pattern support and adapted to support one of the members of a flask upon each side of said support, and clamping means adapted alternately to swing over and hold a cover plate upon each of the members of said. flask to enable said pattern. support to be reversed without dis placing the members of said flask.

6. In molding apparatus, in. combination, a pattern support, a stripper plate upon each side thereof movable relatively thereto and adapted to support one of the members of a flask, and a pivotally mounted clamping member secured .to said pattern support adapted to swing over a flask member mounted upon either side of said pattern support and provided with clamping means adapted to hold the corresponding cover plates thereon during a reversal of said pattern support.

7. Inamolding apparatus, in combination, a pivotally mounted pattern support, a movable member upon each side thereof adapted to support one of the members of a flask, and clamping means adapted to swing alternatively over flask members mounted upon each side of said pattern support.

8. In molding apparatus, in combination, a pattern support pivotally mounted so as to swing about a substantially horizontal axis, a movable member movably mounted upon each side of said pattern support adapted to support one of the members of a flask to retain the same against said pattern, and means adapted to lock said pattern support in each of a plurality of predetermined posltions.

9. In molding apparatus, in combination, a pivotally mounted pattern support, a stripper plate upon each side thereof adapted to support a flask member and to assist in moving the same from said pattern when the pattern support is revolved, means adapted to place alternately said stripper l adapted to place alternately said stripper 5 plates in operative relation to said pattern support, means adapted to swing said pattern support with'its associated parts about its axis, and means adapted to lock said pattern support in each of a plurality of predetermined positions.

10. In molding apparatus, in combination, a ivotally mounted pattern support adapte to swing in a substantially vertical plane, a stripper plate upon each side thereof adapted to support a flask member and to assist in moving the same from said pattern when the pattern support is revolved, means ssasae plates in operative relation to said pattern sup ort, a hand wheel ada ted to swing sai pattern support about its axis, and a spring-pressed locking lever adapted to engage said hand wheel and lock said pattern 20 support in each of a plurality of predetermined positions.

In testimony whereof I aflix my signature, in the presence of two witnesses.

STANTON GRIFFITH. Witnesses:

WARREN CHAMBERS, GEO. W. SToNEY.

It is hereby certified that in Letters Patent N 0. 882,823, granted March 24, 1908, upon the application of Stanton Griffith, of Beloit, Wisconsin, for an improvement in Molders Apparatus, an error appears in the printed specification requiring correction, as follows: In line 79, page 3, the word look should read lock; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Oflice.

Signed and sealed this 28th day of April, A. D., 1908.

[SEAL] C. G. BILLINGS,

Acting Commissioner of Patents. 

